CH15 HW Problem 15.55 Problem 15.55 Blood Speed in an Arteriole A typical arteri

Question

CH15 HW Problem 15.55 Problem 15.55 Blood Speed in an Arteriole A typical arteriole has a diameter of 0.080 mm and carries blood at the rate of What is the speed of the blood in an aneriok? Express your answer using two significant es. 9.6 × 10-5 ans/s. cm/s My Answers Give Up Incorrect; Try Again; 4 attempts remaining Part B Suppose an arteriole branches into 8800 capilaries, each with a diameter of 6.0 x 10m. What is ow speed in caplaries is beneficial it promotes the diftusion of materials to and from the blood) Express your answer using two significant figures My. Answers Give Up ncorrect; Try Again; 4 attempts remaining Continue

Explanation / Answer

here,

diameter of Artericle , d1 = 0.08 mm = 8 * 10^-3 m

radius , r1 = d1/2 = 4 * 10^-3 m

rate of volume flow , V = 9.6 * 10^-5 cm^3/s

a)

let the speed of blood be v1

V = pi * r1^2 * v1

9.6 * 10^-5 = pi * ( 4 * 10^-3)^2 * v1

v1 = 1.91 cm/s

b)

diameter of capilary , d2 = 6 * 10^-6 m

radius , r2 = 3 * 10^-6 m

let the speed be v2

V = pi * r1^2 * v1

9.6 * 10^-5 = pi * ( 6 * 10^-6)^2 * v2

v2 = 8.5 * 10^5 cm/s

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